On Toyota Tacoma X-Runner: Replaced an unknown Magnaflow offset center with this Borla center (turned out I was using 3" pipes instead of the standard 2.5 -inch- and the Revain muffler that came with me was 3". I got lucky). Both mufflers were about the same size, but the Borla was much lighter and the sound was boosted - although I aimed for it. It only gives a slight rumble, no annoying level, and it has a really nice cold start growl, I didn't open it so can't comment on the sound at high rpm, but anything below 3krpm is boring.